Teen gang raped after homecoming dance, onlookers did not help

A teenage girl in California was brutally raped, beaten and robbed after attending a homecoming dance. The assault lasted 2.5 hours. Onlookers did not help, some may have participated. One person has been arrested in connection with the crime.

A 15-year-old girl was gang raped after leaving her school's homecoming dance Saturday night. According to ABC7 News, the victim left the Richmond High School dance around 9:30 p.m. and was on her way "to catch a ride from her dad."

The girl joined a group on the edge of the school campus. It was a dark, secluded location and members of the group were reportedly drinking.

Richmond Police spokesperson Lt. Mark Gagan was quoted as saying:

The series of events that occurred over the next two and a half hours got more severe and more vicious to where she was ultimately gang raped, beaten and her injuries were so severe that she had to be sent to the hospital in a helicopter.

Police are searching for between four and seven actual rapists and as many as a dozen spectactors. ABC7 reports that "Police say some people walked by and actually participated in this crime. No one called police and to make matters worse, authorities told ABC7 some of these people may have recorded this entire rape on their cell phone cameras."

Two students from the Richmond, California high school have been picked up and questioned by police. One suspect is being held on suspicion of rape and robbery and he has been arrested. The other was questioned and later released.

The victim is said to know one of her attackers.

The surveillance cameras at the high school do not work. Administrators and police officers at the dance reportedly checked the campus after the dance concluded at 11 p.m. However, district officials "say they may not have searched the area where the attack was occurring" according to ABC7.

The victim is in stable condition at an area hospital, and the search for suspects continues.